function xhr(j,a,n){var w=window,r=w.XMLHttpRequest?new XMLHttpRequest():(w.ActiveXObject?new ActiveXObject('Microsoft.XMLHTTP'):0)
if(r){r.onreadystatechange=function(){r.readyState==4?(n||a)(r.responseText,r.responseXML):0}
r.open(n?'POST':'GET',j,!0)
if(n){r.setRequestHeader('Content-type','application/x-www-form-urlencoded; charset=utf-8')
if(r.overrideMimeType)r.setRequestHeader('Connection','close')
}r.send(a)}}